Monte Carlo wavefunction approach to the dissipative quantum-phase dynamics of two-component Bose-Einstein condensates

M. Nakano, S. Ohta, R. Kishi, H. Takahashi, S. Furukawa

研究成果: Article査読

1 被引用数 (Scopus)

抄録

We investigate the relaxation effects on the dynamics of two-component dilute gas Bose-Einstein condensates (BEC) with relatively different two-body interactions and Josephson couplings between the two components. Three types of relaxation effects, i.e., one- and three-body losses and a pure phase relaxation caused by elastic two-body collision between condensed and noncondensed atoms, are examined on the dynamical behavior of a macroscopic superposition, i.e., Schrödinger cat state, of two states with atom-number differences between the two components, which is known to be created by the time evolution in certain parameter regimes. Although three-body losses show a relatively large suppression of the revival behavior- of Schrödinger cat state and the Pegg-Barnett phase-difference distribution between the two components for a small-size Schrödinger cat state, one- and three-body loss effects are not shown to directly depend on the size of Schrödinger cat state. In contrast, the pure-phase relaxation effects, causing a reduction of phase-difference distribution and then decaying the Schrödinger cat state, significantly increase with the increase of the size of Schrödinger cat state. These features suggest that a detection of damped collapse-revival behavior is highly possible for medium-size Schrödinger cat states in small-size two-component BECs.

本文言語English
ページ(範囲)523-532
ページ数10
ジャーナルEuropean Physical Journal D
38
3
DOI
出版ステータスPublished - 2006 6 1
外部発表はい

ASJC Scopus subject areas

  • 原子分子物理学および光学

フィンガープリント

「Monte Carlo wavefunction approach to the dissipative quantum-phase dynamics of two-component Bose-Einstein condensates」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル